Flight profile · Delta Air Lines
DL473
Seattle (SEA) to Boston (BOS) · scheduled 10:05 PM – 7:55 AM
How DL473 performs
751 operations, 2024-06-07 to 2026-06-30.
DL473 arrived on time 83.6% of the time, against 75.5% for all SEA → BOS flights — this specific departure is 8.1 percentage points better than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 751 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL473 | 83.6% | 1.33% | -8 min | 2.6% | 751 |
| Delta Air Lines on SEA → BOS | 84.2% | 0.94% | -9 min | 4.3% | 2,863 |
| All SEA → BOS flights | 75.5% | 0.86% | -4 min | 7.3% | 7,585 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL473 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| LAX→BNA Los Angeles to Nashville | 2023-07-02 – 2024-06-06 | 95 | 92.6% |
| SAN→ATL San Diego to Atlanta | 2024-04-09 – 2024-05-06 | 28 | — |
| STL→SLC St. Louis to Salt Lake City | 2024-03-10 – 2024-04-08 | 30 | — |
| LAX→ATL Los Angeles to Atlanta | 2024-01-08 – 2024-03-09 | 62 | — |
| MIA→LGA Miami to New York | 2023-07-01 – 2023-12-30 | 14 | — |
| LGA→MIA New York to Miami | 2023-12-17 – 2023-12-30 | 12 | — |
| FCA→MSP Kalispell to Minneapolis | 2023-12-16 – 2023-12-16 | 1 | — |
| BOS→LAX Boston to Los Angeles | 2023-09-05 – 2023-12-15 | 100 | 89.9% |
| IAD→ATL Washington to Atlanta | 2023-11-23 – 2023-11-24 | 2 | — |
| BNA→LAX Nashville to Los Angeles | 2023-07-02 – 2023-07-09 | 7 | — |
Because the same number has served different journeys, the statistics above describe only the route DL473 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 751 records of DL473 operating SEA → BOS, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.